<template>

    <el-container class="home-container">
        <!-- 头部区域 -->
        <el-header>
            <div>
                <img src="../assets/heima.png" alt="">
                <span>电商后台管理系统</span>
            </div>
            <el-button type="info" @click="logout">退出</el-button>
        </el-header>
        <!-- 页面主体区域-->
        <el-container>
            <!-- 侧边栏-->
            <el-aside :width="collapse ? '64px' : '200px'">
                <div class="toggle-button" @click="toggleCollapse">|||</div>
                <el-menu
                        router="router"
                        :collapse="collapse"
                        :collapse-transition="false"
                        :default-active="activePath"
                        unique-opened="unique-opened"
                        background-color="#333744"
                        text-color="#fff"
                        active-text-color="#409bff">
<!--                    一级级菜单-->
                    <el-submenu :index="item.id.toString()" v-for="item in menuList" :key="item.id">
<!--                        一级菜单模板区-->
                        <template slot="title">
<!--                            图标-->
                            <i :class="iconsObj[item.id]"></i>
<!--                            文本-->
                            <span>{{item.authName}}</span>
                        </template>

<!--                        二级菜单-->
                        <el-menu-item @click="savePath(subItem.path)" :index="subItem.path" v-for="subItem in item.children" :key="subItem.id">
                            <template slot="title">
                                <i class="el-icon-menu"></i>
                                <span>{{subItem.authName}}</span>
                            </template>
                        </el-menu-item>
                    </el-submenu>
                </el-menu>
            </el-aside>
            <!-- 右侧内容主体-->
            <el-main>
                <router-view></router-view>
            </el-main>
        </el-container>
    </el-container>
</template>

<script>
    export default {
        name: "Home",
        created(){
            this.getMenuList();
            this.activePath=window.sessionStorage.getItem('activePath');
        },
        data(){
            return {
                menuList:[],
                iconsObj: {
                    '125': 'iconfont icon-user',
                    '103': 'iconfont icon-tijikongjian',
                    '101': 'iconfont icon-shangpin',
                    '102': 'iconfont icon-danju',
                    '145': 'iconfont icon-baobiao'
                },
                collapse:false,
                activePath:''
            }
        },
        methods: {
            logout() {
                window.sessionStorage.clear();
                this.$router.push('/login');
            },
            // 获取菜单数据
            async getMenuList(){
                const {data} = await this.$http.get('menus');
                if(data.meta.status !== 200){
                    return this.$message.error(data.meta.msg);
                }
                this.menuList=data.data;
            },
            toggleCollapse(){
                // 水平折叠收起菜单
                this.collapse=!this.collapse;
            },
            savePath(path){
                window.sessionStorage.setItem('activePath',path);
                this.activePath=path;
            }
        }
    }
</script>

<style lang="less" scoped>
    .el-header{
        background-color: #373d41;
        display: flex;
        justify-content: space-between;
        padding-left: 0;
        align-items: center;
        color: #fff;
        font-size: 20px;
        div{
            display: flex;
            align-items: center;
            span{
                margin-left: 15px;
            }
        }
    }

    .el-aside{
        background-color: #333744;
        .toggle-button{
            background-color: #4A5064;
            color: #fff;
            font-size: 10px;
            line-height: 24px;
            text-align: center;
            letter-spacing: 0.2em;
            cursor: pointer;
        }
        .el-menu{
            border-right: 0;
        }
    }
    
    .el-main{
        background-color: #eaedf1;
    }

    .home-container{
        height: 100%;
    }

    .iconfont{
        margin-right: 10px;
    }
    
</style>